Andersen Horticultural Library's source list of plants and seedsRichard T. Isaacson · First published 1987Open the Tome
Trees and Shrubs for Northern GardensRichard T. Isaacson, Leon C. Snyder · First published 2000Open the Tome
Trees and Shrubs for Northern GardensLeon C. Snyder, Richard T. Isaacson · First published 2000Open the Tome
Flowering plant index of illustration and information, 1979-1981Richard T Isaacson · First published 1982Open the Tome
Flowering Plant Index of Illustration and Information, 1979-1981 the Garden Center of Greater ClevelandRichard T. Isaacson · First published 1982Open the Tome
Flowering plant index of illustration and informationRichard T. Isaacson · First published 1979Open the Tome
